Ruler



UNITED STATES iPATENT (.)EEICEg7 PEREZ C. RICH, OF BOSTON, ASSIGNOR TO CHARLES J. BAILEY AND JULIUS M. CLAPI, BOTH OF NEWTON, MASSACHUSETTS.

RULER.

SPECIFICATION forming part of Letters Patent No. 297,717, dated April 29, 1884.

Application lcd February 29, 1884. (No model.)

To a/ZZ ich/m, it may concern:

Beit known that I, PEREZ C. RICE, of Boston, county of Suffolk, State of Massachusetts, have invented an Improvement in Rules, of which the following description, in connection with the accompanying drawings, is a speciication, like letters on the drawings representing like parts.

This invention has for its object the production of a ruler which may be used either as a pen or pencil ruler and as a roll`er or aiiat rule, the same being adapted to be rolled over the paper and draw or push the flat rule equallymovement of the roller over the paper may be indicated accurately.

Figure 1, in perspective, represents a ruler embodying my invention, the ilat bar being in position for use with a pencil; Fig. 2,'a like l view with the flat bar in position for use with a pen; Fig. 3, an enlarged left-hand end view of Fig. 1, and Fig. 4 an enlarged view of the roller from its upper side.

The roller A and the flat bar B are supposed to be of wood or any suitable material, and of usual shape. These parts are joined by metal links C, connected with them by screws' 2 3, the said links being slotted at c to receive the screwY or stud c2, which acts as a stop to permit the fiat bar to turn on the screws 2, so that either side of the said bar, when down, may rest dat upon the -paper, Figs. l and 2 showing the said dat bar in its two positions.

In Fig. 1 the ruler is adapted for use with a pencil, and in Fig. 2 with a pen. The edge of the dat bar Amay, if desired, be provided with a strip, b, of brass or other metal. `The end l of the roller is provided with a scale to indicate fractions of inches, and the link C has a pointer, 4, to co-operate therewith, so that should it be desired to mark section or parallel 'lines the roller may be rolled on the paper for a measured distance, thus placing the edge b of the fiatrule just the proper place to 5o make section-lines one after another at a uniform distance apart and parallel. Thevscale 5 may be marked in the roller or made in a metal ferrule applied to the roller.

It will be noticed in my improved ruler that the roller and the dat bar always rest directly upon the paper at the same time. and the flat side, not the edge,.0f the bar rests upon the paper.

l. Asan improved article of manufacture,

a ruler composed of a roller and a bar loosely connected each with the other by links which hold the pivots for the bar, whereby the ruler may be used at will with either side of the bar uppermost, the under side thereof then resting flat on the paper below it, to operate substantially as and for the purpose described.

2. In a ruler, a roller and ilat barjoined together by links, and having astop to arrest 7oy PEREZ C. RICH.

/Witnessesz G. W. GREGORY, B. J. NoYEs. 

